Presonus 137797 Music Notation Software Progression 3-Boxed Easily create your own guitar tab, lead sheets, and standard sheet music Interactive Entry Tools (Fretboard, Keyboard, Drum Pad, Chord Library) Onboard samples include guitars, bass, drums, piano, clavinet, and more Built-in Amp Simulator Compatibility with NOTION 4 Compatibility with Progression 3 and NOTION iPad Apps